Abstract:In this study, six different types of respiration rate models, including the empirical model, chemical kinetic model, Langmuir model, and non-competitive, competitive, and anti-competitive enzyme kinetic models, were developed by monitoring the variation in the intensity of pomegranate fruit respiration throughout the dormant phase at various temperatures. Based on the basic theory of controlled atmosphere dormancy preservation, the respiration process of fruits and vegetables was divided into three stages: induction, dormancy and decay. The beginning and conclusion of the dormant period were determined by measuring changes in the oxygen and carbon dioxide gas contents in the storage environment. The results showed that the respiration intensity of pomegranate grains increased with the increase in temperature, and the correlation coefficient of the competitive enzyme kinetic model equation was the largest under the storage condition of 4 ℃. The relative error between the measured value and the predicted value was 1.19%-5.45%, and the t-test results showed no significant difference between the measured value and the predicted value.